Mosquitoes are the deadliest animals on Earth, spreading various diseases that claim thousands of lives around the world. Dengue and Zika are two of the most dangerous strands but scientists believe that each may serve countereffects to the other.

Based on a scientific test conducted in Salvador, Brazil, survivors of dengue could prove to be more resilient against Zika breakouts. The test is in direct contrast to earlier lab research, which posit that symptoms were made worse when individuals possessed a strong immune system against one strain.

Results of the latest study had emerged from the findings of blood tests involving the IgG3 antibodies.